CN104153907A - Composite surface wedge-shaped combustion chamber gasoline engine cylinder end - Google Patents
Composite surface wedge-shaped combustion chamber gasoline engine cylinder end Download PDFInfo
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- CN104153907A CN104153907A CN201410408522.5A CN201410408522A CN104153907A CN 104153907 A CN104153907 A CN 104153907A CN 201410408522 A CN201410408522 A CN 201410408522A CN 104153907 A CN104153907 A CN 104153907A
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Abstract
The invention provides a composite surface wedge-shaped combustion chamber gasoline engine cylinder end. The composite surface wedge-shaped combustion chamber gasoline engine cylinder end comprises a cylinder end body which is provided with a wedge-shaped combustion chamber, and the combustion chamber is provided with two air valve channels. The axial center lines of the air valve channels are placed in the same plane. The combustion chamber is further provided with a spark plug hole, and the combustion chamber is perpendicular to the plane where the axial center lines of the air valve channels are placed to form a wedge-shaped structure. The surface, from bottom to top, of the combustion chamber is formed by the fact that a first spherical surface, a second spherical surface and a third spherical surface are in tangency, wherein the first spherical surface is a convex spherical surface, the second spherical surface is a concave spherical surface, the third spherical surface is a convex spherical surface which tilts downwards from the head end to the tail end, and the third spherical surface is the top face of the combustion chamber. According to the composite surface wedge-shaped combustion chamber gasoline engine cylinder end, under the condition that the demand of air valve assembly arrangement is met, due to the fact that mixed gas entering the combustion chamber is suffered from resistance in different directions, the flow squishing effect of the combustion chamber is greatly improved, the mixed gas forms full turbulent flow, the gas is fully mixed, the combustion efficiency is improved, the power of a gasoline engine is improved, meanwhile, the oil consumption rate is lowered, and the oil consumption rate is lowered by 8%.
Description
Technical field
The present invention relates to a kind of petrol engine cylinder head, relate in particular to a kind of composite surface wedge-section combustion chamber petrol engine cylinder head.
Background technique
Petrol engine is a kind of dynamic power machine using gasoline for the fuel.Formed by parts such as cylinder, connecting rod, gas distribution system, oil supply system, lubrication system and ignition systems; Cylinder head is provided with gas-entered passageway and exhaust passage, and jointly forms firing chamber face with cylinder, thereby, belong to the parts of petrol engine outbalance.Gasoline in burning Indoor Combustion, produces a large amount of heats as the mixture of fuel and air, for as driving-energy.The parameter of firing chamber is the necessary condition that ensures the efficient operation of petrol engine.
In prior art, the firing chamber face of cylinder head generally adopts wedge-shaped structure, has larger face on year-on-year basis, but this structure is conducive to the installation of other accessory structure, such as valve assembly; If change firing chamber face structure, can affect the layout of inlet and outlet door assembly; And there is the flame travel of the wedge-section combustion chamber in technology long, thermal efficiency ground, and the crowded stream weak effect of firing chamber, cause air inlet undercompounding to cause efficiency low, oil consumption is large, and discharge is serious, and in order to meet the layout of valve assembly, the surface to volume ratio of firing chamber is larger, and the center region of easily causing high-temperature gas can not all directly act on piston head makes piston head unbalance stress produce lateral pressure, and the sidewall of firing chamber is produced and impacted.
Therefore, the petrol engine cylinder head of a kind of Novel wedge-shaped firing chamber need to be proposed, in the situation that meeting valve assembly layout, owing to entering into the mixed gas of firing chamber and receive the resistance of different direction, greatly strengthen the skin-effect of firing chamber, made mixed gas form sufficient turbulent flow, gas is mixed fully, improve combustion efficiency, when promoting the power of petrol engine, reduce rate of fuel consumption.
Summary of the invention
In view of this, the object of this invention is to provide the petrol engine cylinder head of a kind of composite surface wedge-section combustion chamber, in the situation that meeting valve assembly layout, owing to entering into the mixed gas of firing chamber and receive the resistance of different direction, greatly strengthen the skin-effect of firing chamber, made mixed gas form sufficient turbulent flow, gas is mixed fully, improve combustion efficiency, when promoting the power of petrol engine, reduce rate of fuel consumption.
The petrol engine cylinder head of a kind of composite surface provided by the invention wedge-section combustion chamber, comprise cylinder head body, described cylinder head body is provided with the firing chamber of wedge shape, firing chamber is provided with two gas gate passageway, the longitudinal center line of described gas gate passageway is in same plane, described firing chamber is also provided with spark-plug hole, described firing chamber forms wedge-shaped structure with the direction perpendicular to gas gate passageway longitudinal center line place plane, described firing chamber face is from bottom to top successively by the first sphere, the second sphere and the tangent formation of the 3rd sphere, wherein the first sphere is protruding sphere, the second sphere is concave spherical surface, the end face that the 3rd sphere is head end is firing chamber to the downward-sloping protruding sphere of tail end and the 3rd sphere.
Further, the radius of curvature of described the first sphere is greater than the radius of curvature of the second sphere, and the radius of curvature of described the 3rd sphere is greater than the radius of curvature of the first sphere.
Further, described the first sphere, the second sphere and the 3rd shared firing chamber of sphere face are pressed width than being 4:1:7.
Further, the tail end of described the 3rd sphere is provided with the crowded plane of flow perpendicular to described cylinder head body front end end face, and described crowded plane of flow and the 3rd sphere seamlessly transit.
Further, the distance of the longitudinal center line of described crowded plane of flow to two gas gate passageway equates.
Further, the longitudinal center line of described gas gate passageway is perpendicular to described the 3rd sphere.
Beneficial effect of the present invention: composite surface wedge shape gasoline engine oil cylinder head of the present invention, in the situation that meeting valve assembly layout, owing to entering into the mixed gas of firing chamber and receive the resistance of different direction, greatly strengthen the skin-effect of firing chamber, make mixed gas form sufficient turbulent flow, gas is mixed fully, improve combustion efficiency, when promoting the power of petrol engine, reduce rate of fuel consumption, rate of fuel consumption has been reduced more than 8%; By squeezing the setting of plane of flow, make the width of the second sphere, thereby reduce Lu of propagation of flame office, improve the thermal efficiency, the cooling action of end mixed gas is strengthened, and make firing chamber pressure of explosion directly act on piston head center region, and avoid producing lateral pressure, further improve the power meter thermal efficiency of motor.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is structural representation of the present invention.
Fig. 2 is the worm's eye view in Fig. 1.
Embodiment
Fig. 1 is structural representation of the present invention, Fig. 2 is the worm's eye view in Fig. 1, as shown in the figure, the petrol engine cylinder head of a kind of composite surface provided by the invention wedge-section combustion chamber, comprise cylinder head body 1, described cylinder head body is provided with the firing chamber 2 of wedge shape, firing chamber 2 is provided with two gas gate passageway 3, the longitudinal center line of described gas gate passageway 3 is in same plane, described firing chamber 2 is also provided with spark-plug hole 4, described firing chamber 2 forms wedge-shaped structure with the direction perpendicular to gas gate passageway 3 longitudinal center line place planes, described firing chamber face is from bottom to top successively by the first sphere a, the second sphere b and the tangent formation of the 3rd sphere c, wherein the first sphere a is protruding sphere, the second sphere b is concave spherical surface, the 3rd sphere c is that head end is the end face of firing chamber 2 to the downward-sloping protruding sphere of tail end and the 3rd sphere c, the 3rd sphere C is head end with one end that the second sphere b is combined, composite surface wedge shape gasoline engine oil cylinder head of the present invention, in the situation that meeting valve assembly layout, owing to entering into the mixed gas of firing chamber and receive the resistance of different direction, greatly strengthen the skin-effect of firing chamber, make mixed gas form sufficient turbulent flow, gas is mixed fully, improve combustion efficiency, when promoting the power of petrol engine, reduce rate of fuel consumption, rate of fuel consumption has been reduced more than 8%.
In the present embodiment, the radius of curvature of described the first sphere a is greater than the radius of curvature of the second sphere b, the radius of curvature of described the 3rd sphere c is greater than the radius of curvature of the first sphere a, by this structure, after making gas enter into firing chamber, can form abundant turbulent flow, gas mixes fully and can fully burn, and reduces discharge amount, improves the power of petrol engine.
In the present embodiment, described the first sphere a, the second sphere b and the 3rd shared firing chamber of sphere c face are pressed width than being 4:1:7, under this ratio condition, the efficiency that proves by experiment petrol engine is higher, fuel consumption is lower, and fuel consumption reduced by 4.8% than traditional wedge-section combustion chamber, and power ascension 150W.
In the present embodiment, the tail end of described the 3rd sphere c is provided with the crowded plane of flow d perpendicular to described cylinder head body 1 front end end face, cylinder head body a front end end face refers to the one end contacting with the casing of petrol engine, that is to say the end face of lower end in Fig. 1, crowded plane of flow d and spark-plug hole 4 are respectively in the both sides of gas gate passageway 3; By this structure, compare to the structure that traditional wedge-section combustion chamber is tilted and extended the front end end face of cylinder head by firing chamber roof, can shorten widely propagation of flame distance, improve the thermal efficiency, and can make combustion chamber volume reduce and can not affect the layout of valve, eliminate the mobile dead angle of mixed gas, ensure mixing quality and the charging efficiency of mixed gas; Can strengthen skin-effect, and by squeezing coordinating of plane of flow and the first sphere, the second sphere and the 3rd sphere, more can make mixed gas form good turbulent flow and improve the power of combustion efficiency and petrol engine, described crowded plane of flow and the 3rd sphere seamlessly transit, by this structure, can thoroughly eliminate the shape sudden change of dead angle and firing chamber, ensure the abundant burning of mixed gas.
In the present embodiment, the distance of the longitudinal center line of d to two gas gate passageway of described crowded plane of flow 3 equates, can dwindle the volume of firing chamber and can not affect the layout of valve, can strengthen skin-effect, the cooling action of end mixed gas is strengthened, and make firing chamber pressure of explosion directly act on piston head center region, avoid producing the decline of lateral pressure and volumetric efficiency, and can hour can obtain equally good turbulent effect at valve opening, reduce rate of fuel consumption, the longitudinal center line of described gas gate passageway 3 is perpendicular to described the 3rd sphere c, the air intake-exhaust direction of gas gate passageway and firing chamber is adapted, reduce resistance, increase the power character of petrol engine, certainly, gas gate passageway comprises intake valve passage and exhaust valve passage, belong to prior art, do not repeated.
Finally explanation is, above embodiment is only unrestricted in order to technological scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technological scheme of the present invention, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (6)
1. a composite surface wedge-section combustion chamber petrol engine cylinder head, it is characterized in that: comprise cylinder head body, described cylinder head body is provided with the firing chamber of wedge shape, firing chamber is provided with two gas gate passageway, the longitudinal center line of described gas gate passageway is in same plane, described firing chamber is also provided with spark-plug hole, described firing chamber forms wedge-shaped structure with the direction perpendicular to gas gate passageway longitudinal center line place plane, described firing chamber face is from bottom to top successively by the first sphere, the second sphere and the tangent formation of the 3rd sphere, wherein the first sphere is protruding sphere, the second sphere is concave spherical surface, the end face that the 3rd sphere is head end is firing chamber to the downward-sloping protruding sphere of tail end and the 3rd sphere.
2. composite surface wedge-section combustion chamber petrol engine cylinder head according to claim 1, is characterized in that: the radius of curvature of described the first sphere is greater than the radius of curvature of the second sphere, the radius of curvature of described the 3rd sphere is greater than the radius of curvature of the first sphere.
3. composite surface wedge-section combustion chamber petrol engine cylinder head according to claim 2, is characterized in that: described the first sphere, the second sphere and the 3rd shared firing chamber of sphere face by width than being 4:1:7.
4. composite surface wedge-section combustion chamber petrol engine cylinder head according to claim 3, is characterized in that: the tail end of described the 3rd sphere is provided with the crowded plane of flow perpendicular to described cylinder head body front end end face, described crowded plane of flow and the 3rd sphere seamlessly transit.
5. composite surface wedge-section combustion chamber petrol engine cylinder head according to claim 4, is characterized in that: the distance of the longitudinal center line of described crowded plane of flow to two gas gate passageway equates.
6. composite surface wedge-section combustion chamber petrol engine cylinder head according to claim 5, is characterized in that: the longitudinal center line of described gas gate passageway is perpendicular to described the 3rd sphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410408522.5A CN104153907A (en) | 2014-03-07 | 2014-08-19 | Composite surface wedge-shaped combustion chamber gasoline engine cylinder end |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410083554.2 | 2014-03-07 | ||
| CN201410083554 | 2014-03-07 | ||
| CN201410408522.5A CN104153907A (en) | 2014-03-07 | 2014-08-19 | Composite surface wedge-shaped combustion chamber gasoline engine cylinder end |
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| CN104153907A true CN104153907A (en) | 2014-11-19 |
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| CN201410408522.5A Pending CN104153907A (en) | 2014-03-07 | 2014-08-19 | Composite surface wedge-shaped combustion chamber gasoline engine cylinder end |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050464A (en) * | 2015-04-07 | 2016-10-26 | 丰田自动车株式会社 | Internal combustion engine |
| CN108798872A (en) * | 2018-06-21 | 2018-11-13 | 江苏大学 | Combustion chamber, cylinder head and miniature gasoline engine |
| CN112628012A (en) * | 2020-12-21 | 2021-04-09 | 安徽竞道动力科技有限公司 | Composite surface wedge-shaped combustion chamber gasoline engine cylinder head |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3841548A1 (en) * | 1988-12-09 | 1990-06-13 | Kloeckner Humboldt Deutz Ag | Internal combustion engine |
| EP0851102B1 (en) * | 1996-12-24 | 2003-05-07 | Toyota Jidosha Kabushiki Kaisha | Combustion chamber structure for an internal combustion engine |
| CN2591250Y (en) * | 2002-12-14 | 2003-12-10 | 郑国璋 | direct-firing engine cylinder head |
| CN101153568A (en) * | 2006-09-30 | 2008-04-02 | 奇瑞汽车有限公司 | Cylinder cover with double sparking plugs |
| CN102305144A (en) * | 2011-03-14 | 2012-01-04 | 隆鑫通用动力股份有限公司 | Composite spherical combustion chamber cylinder head for gasoline engine and gasoline engine |
| CN202391552U (en) * | 2011-09-19 | 2012-08-22 | 隆鑫通用动力股份有限公司 | Composite surface combustion chamber cylinder head and gasoline engine thereof |
-
2014
- 2014-08-19 CN CN201410408522.5A patent/CN104153907A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3841548A1 (en) * | 1988-12-09 | 1990-06-13 | Kloeckner Humboldt Deutz Ag | Internal combustion engine |
| EP0851102B1 (en) * | 1996-12-24 | 2003-05-07 | Toyota Jidosha Kabushiki Kaisha | Combustion chamber structure for an internal combustion engine |
| CN2591250Y (en) * | 2002-12-14 | 2003-12-10 | 郑国璋 | direct-firing engine cylinder head |
| CN101153568A (en) * | 2006-09-30 | 2008-04-02 | 奇瑞汽车有限公司 | Cylinder cover with double sparking plugs |
| CN102305144A (en) * | 2011-03-14 | 2012-01-04 | 隆鑫通用动力股份有限公司 | Composite spherical combustion chamber cylinder head for gasoline engine and gasoline engine |
| CN202391552U (en) * | 2011-09-19 | 2012-08-22 | 隆鑫通用动力股份有限公司 | Composite surface combustion chamber cylinder head and gasoline engine thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050464A (en) * | 2015-04-07 | 2016-10-26 | 丰田自动车株式会社 | Internal combustion engine |
| CN106050464B (en) * | 2015-04-07 | 2019-02-15 | 丰田自动车株式会社 | Internal combustion engine |
| CN108798872A (en) * | 2018-06-21 | 2018-11-13 | 江苏大学 | Combustion chamber, cylinder head and miniature gasoline engine |
| CN112628012A (en) * | 2020-12-21 | 2021-04-09 | 安徽竞道动力科技有限公司 | Composite surface wedge-shaped combustion chamber gasoline engine cylinder head |
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Application publication date: 20141119 |
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